The slightest change in pH can destroy the substance or organism. The pH of a cell's interior helps regulate the cell's chemical reactions. For example, the pH of blood is 7.4, if blood falls to 6.8 or lower or 8.2 or higher, it results in death.
(E) none of the above statements are true
rain almost always comes from west to east so the western side of the mountain ranges would get more rain. A and C are not very relevant to the question<span />
The answer is B. molecule, I know becuase I just took the test and got 100% Hope it helps
